Struct WalSegmentPayload 

pub struct WalSegmentPayload {
    pub namespace_id: NamespaceId,
    pub segment_id: WalSegmentId,
    pub writer_epoch: WriterEpoch,
    pub prev_visible_segment: Option<WalSegmentPointer>,
    pub base_head_seq: ChangeSeq,
    pub start_seq: ChangeSeq,
    pub end_seq: ChangeSeq,
    pub records: Vec<WalCommitPayload>,
}

Carries the namespace-specific chain metadata and commits stored in one WAL object.

See WAL segment rules.

Fields

namespace_id: NamespaceId

Namespace this segment belongs to; recovery rejects cross-namespace content.

segment_id: WalSegmentId

Immutable object identity expected to agree with the head pointer and object key.

writer_epoch: WriterEpoch

Fencing epoch of the writer that proposed this segment.

prev_visible_segment: Option<WalSegmentPointer>

Previous accepted chain member, or None only when no visible segment precedes this one.

base_head_seq: ChangeSeq

Head sequence the writer materialized against before adding these records.

start_seq: ChangeSeq

Sequence of the first record, and the position encoded into segment_id.

end_seq: ChangeSeq

Sequence of the final record, checked against both records and the head pointer.

records: Vec<WalCommitPayload>

Logical commits in contiguous ascending sequence order.

Trait Implementations

impl Clone for WalSegmentPayload

fn clone(&self) -> WalSegmentPayload

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for WalSegmentPayload

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for WalSegmentPayload

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for WalSegmentPayload

impl PartialEq for WalSegmentPayload

fn eq(&self, other: &WalSegmentPayload) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for WalSegmentPayload

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for WalSegmentPayload